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169 results on '"Grishantseva, L. A."'

1. Time dependence of the proton flux measured by PAMELA during the July 2006 - December 2009 solar minimum

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Grishantseva, L., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Wu, J., Zampa, G., Zampa, N., Zverev, V. G., Potgieter, M. S., and Vos, E. E.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics
Abstract

The energy spectra of galactic cosmic rays carry fundamental information regarding their origin and propagation. These spectra, when measured near Earth, are significantly affected by the solar magnetic field. A comprehensive description of the cosmic radiation must therefore include the transport and modulation of cosmic rays inside the heliosphere. During the end of the last decade the Sun underwent a peculiarly long quiet phase well suited to study modulation processes. In this paper we present proton spectra measured from July 2006 to December 2009 by PAMELA. The large collected statistics of protons allowed the time variation to be followed on a nearly monthly basis down to 400 MV. Data are compared with a state-of-the-art three-dimensional model of solar modulation., Comment: 17 pages, 5 figures, 1 table, to appear in Astrophysical Journal. Corrected two elements of Table 1

Published
2013
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2. The discovery of geomagnetically trapped cosmic ray antiprotons

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Jerse, G., Karelin, A. V., Kheymits, M. D., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Wu, J., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Experiment
Abstract

The existence of a significant flux of antiprotons confined to Earth's magnetosphere has been considered in several theoretical works. These antiparticles are produced in nuclear interactions of energetic cosmic rays with the terrestrial atmosphere and accumulate in the geomagnetic field at altitudes of several hundred kilometers. A contribution from the decay of albedo antineutrons has been hypothesized in analogy to proton production by neutron decay, which constitutes the main source of trapped protons at energies above some tens of MeV. This Letter reports the discovery of an antiproton radiation belt around the Earth. The trapped antiproton energy spectrum in the South Atlantic Anomaly (SAA) region has been measured by the PAMELA experiment for the kinetic energy range 60--750 MeV. A measurement of the atmospheric sub-cutoff antiproton spectrum outside the radiation belts is also reported. PAMELA data show that the magnetospheric antiproton flux in the SAA exceeds the cosmic-ray antiproton flux by three orders of magnitude at the present solar minimum, and exceeds the sub-cutoff antiproton flux outside radiation belts by four orders of magnitude, constituting the most abundant source of antiprotons near the Earth., Comment: Accepted for publication in ApJL

Published
2011
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3. Observations of the December 13 and 14, 2006, Solar Particle Events in the 80 MeV/n - 3 GeV/n range from space with PAMELA detector

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Grishantseva, L., Gillard, W., Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Sarkar, R., Rossetto, L., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, J., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Astrophysics - Solar and Stellar Astrophysics, High Energy Physics - Experiment
Abstract

We present the space spectrometer PAMELA observations of proton and helium fluxes during the December 13 and 14, 2006 solar particle events. This is the first direct measurement of the solar energetic particles in space with a single instrument in the energy range from $\sim$ 80 MeV/n up to $\sim$ 3 GeV/n. In the event of December 13 measured energy spectra of solar protons and helium were compared with results obtained by neutron monitors and other detectors. Our measurements show a spectral behaviour different from those derived from the neutron monitor network. No satisfactory analytical fitting was found for the energy spectra. During the first hours of the December 13 event solar energetic particles spectra were close to the exponential form demonstrating rather significant temporal evolution. Solar He with energy up to ~1 GeV/n was recorded on December 13. In the event of December 14 energy of solar protons reached ~600 MeV whereas maximum energy of He was below 100 MeV/n. The spectra were slightly bended in the lower energy range and preserved their form during the second event. Difference in the particle flux appearance and temporal evolution in these two events may argue for a special conditions leading to acceleration of solar particles up to relativistic energies., Comment: Accepted for publication on Astrophysical journal

Published
2011
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4. PAMELA Measurements of Cosmic-ray Proton and Helium Spectra

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Wu, J., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Protons and helium nuclei are the most abundant components of the cosmic radiation. Precise measurements of their fluxes are needed to understand the acceleration and subsequent propagation of cosmic rays in the Galaxy. We report precision measurements of the proton and helium spectra in the rigidity range 1 GV-1.2 TV performed by the satellite-borne experiment PAMELA. We find that the spectral shapes of these two species are different and cannot be well described by a single power law. These data challenge the current paradigm of cosmic-ray acceleration in supernova remnants followed by diffusive propagation in the Galaxy. More complex processes of acceleration and propagation of cosmic rays are required to explain the spectral structures observed in our data., Comment: 13 pages, 4 figures, link to SOM (with tables) in the references. This manuscript has been accepted for publication in Science. This version has not undergone final editing. Please refer to the complete version of record at http://www.sciencemag.org/ [www.sciencemag.org]

Published
2011
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5. The cosmic-ray electron flux measured by the PAMELA experiment between 1 and 625 GeV

Author

PAMELA Collaboration, Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stochaj, S. J., Stockton, J. C., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, J., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Precision measurements of the electron component in the cosmic radiation provide important information about the origin and propagation of cosmic rays in the Galaxy. Here we present new results regarding negatively charged electrons between 1 and 625 GeV performed by the satellite-borne experiment PAMELA. This is the first time that cosmic-ray electrons have been identified above 50 GeV. The electron spectrum can be described with a single power law energy dependence with spectral index -3.18 +- 0.05 above the energy region influenced by the solar wind (> 30 GeV). No significant spectral features are observed and the data can be interpreted in terms of conventional diffusive propagation models. However, the data are also consistent with models including new cosmic-ray sources that could explain the rise in the positron fraction., Comment: 11 pages, 3 figures, accepted for publication in PRL

Published
2011
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6. PAMELA results on the cosmic-ray antiproton flux from 60 MeV to 180 GeV in kinetic energy

Author

PAMELA Collaboration, Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Hofverberg, P., Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, J., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray antiproton flux and the antiproton-to-proton flux ratio which extends previously published measurements down to 60 MeV and up to 180 GeV in kinetic energy. During 850 days of data acquisition approximately 1500 antiprotons were observed. The measurements are consistent with purely secondary production of antiprotons in the galaxy. More precise secondary production models are required for a complete interpretation of the results., Comment: 11 pages, 3 figures, 1 table. Accepted for publication in Physical Review Letters

Published
2010
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7. A statistical procedure for the identification of positrons in the PAMELA experiment

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Hofverberg, P., Jerse, G., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Rossetto, L., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, J., Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., and Marinucci, D.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The PAMELA satellite experiment has measured the cosmic-ray positron fraction between 1.5 GeV and 100 GeV. The need to reliably discriminate between the positron signal and proton background has required the development of an ad hoc analysis procedure. In this paper, a method for positron identification is described and its stability and capability to yield a correct background estimate is shown. The analysis includes new experimental data, the application of three different fitting techniques for the background sample and an estimate of systematic uncertainties due to possible inaccuracies in the background selection. The new experimental results confirm both solar modulation effects on cosmic-rays with low rigidities and an anomalous positron abundance above 10 GeV., Comment: 27 pages, 11 figures, 3 tables

Published
2010
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8. The PAMELA Space Experiment

Author

Mocchiutti, E., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., De Pascale, M. P., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Hofverberg, P., Jerse, G., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Maksumov, O., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Nikonov, N. N., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Rossetto, L., Runtso, M., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, J., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The 15th of June 2006, the PAMELA satellite-borne experiment was launched from the Baikonur cosmodrome and it has been collecting data since July 2006. The apparatus comprises a time-of-flight system, a silicon-microstrip magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail counter scintillator and a neutron detector. The combination of these devices allows precision studies of the charged cosmic radiation to be conducted over a wide energy range (100 MeV -- 100's GeV) with high statistics. The primary scientific goal is the measurement of the antiproton and positron energy spectrum in order to search for exotic sources, such as dark matter particle annihilations. PAMELA is also searching for primordial antinuclei (anti-helium) and testing cosmic-ray propagation models through precise measurements of the anti-particle energy spectrum and precision studies of light nuclei and their isotopes. Moreover, PAMELA is investigating phenomena connected with solar and earth physics., Comment: Proceedings for the "XLIVth Rencontres de Moriond session devoted to Electroweak Interactions and Unified Theories", La Thuile 2009

Published
2009

9. Observation of an anomalous positron abundance in the cosmic radiation

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Pascale, M. P., De Rosa, G., De Simone, N., Di Felice, V., Galper, A. M., Grishantseva, L., Hofverberg, P., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Orsi, S., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Astrophysics
Abstract

Positrons are known to be produced in interactions between cosmic-ray nuclei and interstellar matter ("secondary production"). Positrons may, however, also be created by dark matter particle annihilations in the galactic halo or in the magnetospheres of near-by pulsars. The nature of dark matter is one of the most prominent open questions in science today. An observation of positrons from pulsars would open a new observation window on these sources. Here we present results from the PAMELA satellite experiment on the positron abundance in the cosmic radiation for the energy range 1.5 - 100 GeV. Our high energy data deviate significantly from predictions of secondary production models, and may constitute the first indirect evidence of dark matter particle annihilations, or the first observation of positron production from near-by pulsars. We also present evidence that solar activity significantly affects the abundance of positrons at low energies., Comment: Submitted to Nature, 20 pages, 5 figures, 1 table

Published
2008
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10. A new measurement of the antiproton-to-proton flux ratio up to 100 GeV in the cosmic radiation

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Pascale, M. P., De Rosa, G., Fedele, D., Galper, A. M., Grishantseva, L., Hofverberg, P., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Minori, M., Mocchiutti, E., Nagni, M., Orsi, S., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Taddei, E., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Astrophysics, High Energy Physics - Experiment
Abstract

A new measurement of the cosmic ray antiproton-to-proton flux ratio between 1 and 100 GeV is presented. The results were obtained with the PAMELA experiment, which was launched into low-earth orbit on-board the Resurs-DK1 satellite on June 15th 2006. During 500 days of data collection a total of about 1000 antiprotons have been identified, including 100 above an energy of 20 GeV. The high-energy results are a ten-fold improvement in statistics with respect to all previously published data. The data follow the trend expected from secondary production calculations and significantly constrain contributions from exotic sources, e.g. dark matter particle annihilations., Comment: 10 pages, 4 figures, 1 table

Published
2008
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11. First Results from the PAMELA Space Mission

Author

Boezio, M., Bonvicini, V., Jerse, G., Mocchiutti, E., Vacchi, A., Zampa, G., Zampa, N., Adriani, O., Bongi, M., Bonechi, L., Bottai, S., Fedele, D., Papini, P., Ricciarini, S. B., Spillantini, P., Taddei, E., Vannuccini, E., Barbarino, G. C., Campana, D., Carbone, R., Osteria, G., Bazilevskaya, G. A., Kvashnin, A. N., Stozhkov, Y. I., Bellotti, R., Bruno, A., Cafagna, F., Bogomolov, E. A., Krutkov, S. Y., Vasilyev, G., Borisov, S., Casolino, M., De Pascale, M. P., De Simone, N., Di Felice, V., Malvezzi, V., Marcelli, L., Nikonov, N., Picozza, P., Sparvoli, R., Carlson, P., Hofverberg, P., Orsi, S., Pearce, M., Castellini, G., Galper, A. M., Grishantseva, L., Leonov, A., Koldashov, S. V., Mikhailov, V. V., Voronov, S. A., Yurkin, Y. T., Zverev, V. G., Menn, W., Simon, M., and Ricci, M.

Subjects
Astrophysics, High Energy Physics - Experiment
Abstract

On the 15th of June 2006, the PAMELA satellite-borne experiment was launched from the Baikonur cosmodrome and it has been collecting data since July 2006. The apparatus comprises a time-of-flight system, a silicon-microstrip magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail counter scintillator and a neutron detector. The combination of these devices allows precision studies of the charged cosmic radiation to be conducted over a wide energy range (100 MeV - 100's GeV) with high statistics. The primary scientific goal is the measurement of the antiproton and positron energy spectrum in order to search for exotic sources, such as dark matter particle annihilations. PAMELA is also searching for primordial antinuclei (anti-helium), and testing cosmic-ray propagation models through precise measurements of the antiparticle energy spectrum and precision studies of light nuclei and their isotopes. We review the status of the apparatus and present preliminary results concerning antiparticle measurements and dark-matter indirect searches., Comment: Parallel talk at ICHEP08, Philadelphia, USA, July 2008. 5 pages, LaTeX, 3 eps figures

Published
2008

12. The PAMELA space experiment

Author

Menn, W., Adriani, O., Barbarino, G.C., Bazilevskaya, G.A., Bellotti, R., Boezio, M., Bogomolov, E.A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M.P., De Santis, C., De Simone, N., Di Felice, V., Galper, A.M., Gillard, W., Grishantseva, L., Jerse, G., Karelin, A.V., Koldashov, S.V., Krutkov, S.Y., Kvashnin, A.N., Leonov, A., Malakhov, V., Malvezzi, V., Marcelli, L., Mayorov, A.G., Mikhailov, V.V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S.B., Sarkar, R., Rossetto, L., Simon, M., Sparvoli, R., Spillantini, P., Stochaj, S.J., Stockton, J.C., Stozhkov, Y.I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S.A., Wu, J., Yurkin, Y.T., Zampa, G., Zampa, N., and Zverev, V.G.

Published
2013
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13. PAMELA and electrons

Author

Mocchiutti, E., Adriani, O., Barbarino, G.C., Bazilevskaya, G.A., Bellotti, R., Boezio, M., Bogomolov, E.A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M.P., De Santis, C., Di Felice, V., Galper, A.M., Grishantseva, L., Gillard, W., Hofverberg, P., Jerse, G., Koldashov, S.V., Krutkov, S.Y., Kvashnin, A.N., Leonov, A., Maksumov, O., Malakhov, V., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V.V., Mori, N., Nikonov, N., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S.B., Rossetto, L., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y.I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S.A., Wu, J., Yurkin, Y.T., Zampa, G., Zampa, N., and Zverev, V.G.

Published
2011
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14. Solar proton events at the end of the 23rd and start of the 24th solar cycle recorded in the PAMELA experiment

Author

Bazilevskaya, G. A., Mayorov, A. G., Malakhov, V. V., Mikhailov, V. V., Adriani, O., Barbarino, G. C., Belotti, R., Boezio, M., Bogomolov, E. A., Bonvicini, V., Bongi, M., Bonechi, L., Borisov, S. V., Bottai, S., Bruno, A., Vacci, A., Vanuccini, E., Vasilyev, G. I., Voronov, S. A., Wu, J., Galper, A. M., Grishantseva, L. A., Danilchenko, I. A., Gillard, W., Jerse, G., Zampa, G., Zampa, N., Zverev, V. G., Casolino, M., Campana, D., Carbone, R., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Yu., Consiglio, L., Leonov, A. A., Malvezzi, V., Marcelli, L., Menn, W., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N. N., Osteria, G., Palma, F., Papini, P., Pizzolotto, C., De Pascale, M. P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S. B., Rossetto, L., Runtso, M. F., De Santis, C., Sarkar, R., Simon, M., De Simone, N., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Di Felice, V., Kheymits, M. D., and Yurkin, Yu. T.

Published
2013
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15. Antiprotons of galactic cosmic radiation in the PAMELA experiment

Author

Mayorov, A. G., Adriani, O., Barbarino, G., Bazilevskaia, G. A., Belotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., Danilchenko, I. A., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L. A., Jerse, G., Karelin, A. V., Kheimits, M. D., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Yu., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N. N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, S., Ricci, M., Ricciarini, S., Rozetto, L., Runtso, M. F., Sarkar, R., Simon, M., Sparvoli, R., Spilantini, P., Stozhkov, Yu. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Wu, J., Yurkin, Yu. T., Zampa, G., Zampa, N., and Zverev, V. G.

Published
2013
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16. Measurement of the flux of primary cosmic ray antiprotons with energies of 60 MeV to 350 GeV in the PAMELA experiment

Author

Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonvicini, V., Bongi, M., Bonechi, L., Borisov, S. V., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Wu, J., Galper, A. M., Grishantseva, L. A., Danilchenko, I. A., Gillard, W., Jerse, G., Zampa, G., Zampa, N., Zverev, V. G., Casolino, M., Campana, D., Carbone, R., Karelin, A. V., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Y., Consiglio, L., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Malvezzi, W., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N. N., Osteria, G., Palma, F., Papini, P., Pizzolotto, C., de Pascale, M. P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S., Rossetto, L., Runtso, M. F., De Santis, C., Sarkar, R., Simon, M., De Simone, N., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Di Felice, V., and Yurkin, Y. T.

Published
2013
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17. The PAMELA space mission for antimatter and dark matter searches in space

Author

Boezio, M., Bruno, A., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Jerse, G., Karelin, A. V., Kheymits, M. D., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Wu, J., Zampa, G., Zampa, N., and Zverev, V. G.

Published
2012
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18. High-energy cosmic ray proton spectrum

Author

Borisov, S. V., Voronov, S. A., Galper, A. M., Grishantseva, L. A., Danil’chenko, I. A., Zverev, V. G., Karelin, A. V., Koldashev, S. V., Koldobsky, S. A., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Mikhailov, V. V., Runtso, M. F., Yurkin, Yu. T., Adriani, O., Bazilevskaya, G. A., Barbarino, G., Belotti, R., Bogomolov, E. A., Boezio, M., Bonvicini, V., Bongi, M., Bonechi, L., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasil’ev, G. V., Zampa, G., Zampa, N., Casolino, M., Campana, D., Carlson, P., Cafagna, F., Kvashnin, A. N., Malvezzi, V., Marcelli, L., Menn, W., Mocchiutti, E., Osteria, G., Papini, P., De Pascale, M. P., Picozza, P., Pearce, M., Ricci, M., Ricciarini, S., Simon, M., De Simone, N., Sparvoli, R., Spilantini, P., Stozhkov, Yu. I., Di Feliche, V., and Fedele, D.

Published
2011
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19. Measuring fluxes of the protons and helium nuclei of high-energy cosmic rays

Author

Karelin, A. V., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., Danilchenko, I. A., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Grishantseva, L. A., Hofverberg, P., Jerse, G., Koldashov, S. V., Koldobskiy, S. A., Krutkov, S. Yu., Kvashnin, A. N., Leonov, A. A., Malvezzi, V., Marcelli, L., Mayorov, A. G., Malakhov, V. V., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Wu, J., Yurkin, Yu. T., Zampa, G., Zampa, N., and Zverev, V. G.

Published
2011
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20. Measurement of the high-energy electron and positron spectrum in the PAMELA experiment

Author

Borisov, S. V., Boezio, M., Voronov, S. A., Galper, A. M., Jerse, G., Karelin, A. V., Mocchiutti, E., Picozza, P., Adriani, O., Bazilevskaya, G. A., Bellotti, R., Bonvicini, V., Bonechi, L., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasil’ev, G., Wu, J., Grishantseva, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Gillard, W., Zampa, G., Zampa, N., Zverev, V. G., Casolino, M., Campana, D., Carbone, R., Castellini, G., Carlson, P., Cafagna, F., Kvashnin, A. N., Koldashov, S. V., Consiglio, L., Krutkov, S. Yu., Leonov, A., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Papini, P., Pearce, M., Ricciarini, S. B., Ricci, M., Rossetto, L., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Hofverberg, P., and Yurkin, Yu. T.

Published
2010
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22. Spectra of primary cosmic-ray positrons and electrons in the PAMELA experiment

Author

Mikhailov, V. V., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Belotti, R., Bogomolov, E. A., Boezio, M., Bonvicini, V., Bongi, M., Bonechi, L., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Wu, J., Galper, A. M., Grishantseva, L. A., De Santis, C., De Simone, N., Jerse, G., Di Felice, V., Zampa, G., Zampa, N., Zverev, V. G., Casolino, M., Campana, D., Carlson, P., Carbone, R., Karelin, A. V., Castellini, G., Cafagna, F., Kvashnin, A. N., Koldashov, S. V., Koldobskiy, S. A., Consiglio, L., Krutkov, S. Yu., Leonov, A. A., Malakhov, V. V., Mayorov, A. G., Malvezzi, V., Marcelli, L., Menn, W., Mocchiutti, E., Monaco, A., Mori, N., Osteria, G., Palma, F., Papini, P., De Pascale, M. P., Pizzolotto, C., Picozza, P., Pearce, M., Rossetto, L., Ricci, M., Ricciarini, S., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., and Yurkin, Yu. T.

Published
2013
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23. THE PAMELA EXPERIMENT: FIVE YEARS OF COSMIC RAYS INVESTIGATION

Author

MOCCHIUTTI, E., primary, BOEZIO, M., additional, BONVICINI, V., additional, SARKAR, R., additional, PIZZOLOTTO, C., additional, VACCHI, A., additional, ZAMPA, G., additional, ZAMPA, N., additional, CARBONE, R., additional, FORMATO, V., additional, JERSE, G., additional, BORISOV, S., additional, DE SIMONE, N., additional, FELICE, V. DI, additional, NIKONOV, N. N., additional, PALMA, F., additional, PICOZZA, P., additional, SPARVOLI, R., additional, CASOLINO, M., additional, DEPASCALE, M. P., additional, DE SANTIS, C., additional, MALVEZZI, V., additional, MARCELLI, L., additional, ADRIANI, O., additional, BONECHI, L., additional, SPILLANTINI, P., additional, BONGI, M., additional, BOTTAI, S., additional, MORI, N., additional, PAPINI, P., additional, RICCIARINI, S. B., additional, VANNUCCINI, E., additional, BARBARINO, G. C., additional, CAMPANA, D., additional, CONSIGLIO, L., additional, OSTERIA, G., additional, BAZILEVSKAYA, G. A., additional, KVASHNIN, A. N., additional, MAKSUMOV, O., additional, STOZHKOV, Y. I., additional, BELLOTTI, R., additional, BRUNO, A., additional, MONACO, A., additional, CAFAGNA, F., additional, BOGOMOLOV, E. A., additional, KRUTKOV, S. Y., additional, VASILYEV, G., additional, CARLSON, P., additional, PEARCE, M., additional, ROSSETTO, L., additional, WU, J., additional, CASTELLINI, G., additional, GALPER, A. M., additional, GRISHANTSEVA, L., additional, KARELIN, A. V., additional, KOLDASHOV, S. V., additional, LEONOV, A., additional, MALAKHOV, V., additional, MAYOROV, A. G., additional, MIKHAILOV, V. V., additional, RUNTSO, M., additional, VORONOV, S. A., additional, YURKIN, Y. T., additional, ZVEREV, V. G., additional, RICCI, M., additional, MENN, W., additional, and SIMON, M., additional

Published
2012
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24. The PAMELA space mission for antimatter and dark matter searches in space

Author

Boezio, M., primary, Bruno, A., additional, Adriani, O., additional, Barbarino, G. C., additional, Bazilevskaya, G. A., additional, Bellotti, R., additional, Bogomolov, E. A., additional, Bongi, M., additional, Bonvicini, V., additional, Borisov, S., additional, Bottai, S., additional, Cafagna, F., additional, Campana, D., additional, Carbone, R., additional, Carlson, P., additional, Casolino, M., additional, Castellini, G., additional, Consiglio, L., additional, De Pascale, M. P., additional, De Santis, C., additional, De Simone, N., additional, Di Felice, V., additional, Galper, A. M., additional, Gillard, W., additional, Grishantseva, L., additional, Jerse, G., additional, Karelin, A. V., additional, Kheymits, M. D., additional, Koldashov, S. V., additional, Krutkov, S. Y., additional, Kvashnin, A. N., additional, Leonov, A., additional, Malakhov, V., additional, Marcelli, L., additional, Mayorov, A. G., additional, Menn, W., additional, Mikhailov, V. V., additional, Mocchiutti, E., additional, Monaco, A., additional, Mori, N., additional, Nikonov, N., additional, Osteria, G., additional, Palma, F., additional, Papini, P., additional, Pearce, M., additional, Picozza, P., additional, Pizzolotto, C., additional, Ricci, M., additional, Ricciarini, S. B., additional, Rossetto, L., additional, Sarkar, R., additional, Simon, M., additional, Sparvoli, R., additional, Spillantini, P., additional, Stozhkov, Y. I., additional, Vacchi, A., additional, Vannuccini, E., additional, Vasilyev, G., additional, Voronov, S. A., additional, Yurkin, Y. T., additional, Wu, J., additional, Zampa, G., additional, Zampa, N., additional, and Zverev, V. G., additional

Published
2011
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25. Trapped antiprotons in the Earth inner radiation belt in PAMELA experiment

Author

Yurkin, Yu. T., Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Boezzio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Danilchenko, I. A., de Pascale, M. P., Di Felice, V., Galper, A. M., Gillard, V., Grishantseva, L. A., Jerse, G., Karelin, A. V., Kheymits, M. D., Koldashov, S. V., Koldobsky, S. A., Krutkov, S. Yu., Kvashnin, A. N., Leonov, A. A., Mayorov, A. G., Malakhov, V. V., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Mori, N., Nikonov, N. V., Osteria, G., Papini, P., Pearce, M., Picozza, P., Pizzolotto, S., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., de Simone, N., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Vacchi, A., Vannuccini, E., Vasiliev, G. V., Voronov, S. A., Wu, Y., Zampa, G., Zampa, N., and Zverev, V. G.

Published
2011
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26. Solar modulation of the spectra of protons and helium nuclei in the PAMELA experiment

Author

Maiorov, A. G., Adriani, O., Barbarino, G., Bazilevskaia, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Danil’chenko, I. A., de Pascale, M. P., di Felice, V., Gal’per, A. M., Gillard, V., Grishantseva, L. A., Jerse, G., Karelin, A. V., Koldashov, S. V., Koldobskii, S. A., Krutkov, S. Yu., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Mori, N., Nikonov, N. V., Osteria, G., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S., Runtso, M. F., Simon, M., De Simone, N., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Vacchi, A., Vannuccini, E., Vasil’ev, G. I., Voronov, S. A., Wu, Y., Yurkin, Yu. T., Zampa, G., Zampa, N., and Zverev, V. G.

Published
2011
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27. The search for antihelium in cosmic rays using data from the PAMELA experiment

Author

Mayorov, A. G., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Danilchenko, I. A., De Pascale, M. P., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L. A., Jerse, G., Karelin, A. V., Koldashov, S. V., Koldobsky, S. A., Krutkov, S. Yu., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Mori, N., Nikonov, N. V., Osteria, G., Papini, P., Pearce, M., Picozza, P., Pizzolotto, P., Ricci, M., Ricciarini, S. B., Runtso, M. F., Simon, M., De Simone, N., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Vacchi, A., Vannuccini, E., Vasiliev, G. I., Voronov, S. A., Wu, Y., Yurkin, Yu. T., Zampa, G., Zampa, N., and Zverev, V. G.

Published
2011
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28. Positrons and electrons in primary cosmic rays as measured in the PAMELA experiment

Author

Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Pascale, M. P., De Rosa, G., Fedele, D., Di Felice, V., Galper, A. M., Grishantseva, L. A., Hofverberg, P., Leonov, A. A., Koldashov, S. V., Krutkov, S. Yu., Kvashnin, A. N., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Minori, M., Mocchiutti, E., Orsi, S., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., De Simone, N., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Taddei, E., Vacchi, A., Vannuccini, E., Vasil’ev, G. V., Voronov, S. A., Yurkin, Yu. T., Zampa, G., Zampa, N., and Zverev, V. G.

Published
2009
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30. Secondary electron and positron fluxes in the near-Earth space observed in the ARINA and PAMELA experiments

Author

Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, T. R., Bzheumikhova, M. A., Bogomolov, E. A., Boezio, V. M., Bonvicini, V., Bongi, M., Bonechi, L., Bottai, S., Bruno, A., Vacchi, A., Vannuccini, E., Vasiliev, G. V., Voronov, S. A., Galper, A. M., Grishantseva, L. A., Zampa, G., Zampa, N., Zverev, V. G., Casolino, M., Campana, T. D., Carlson, P., Castellini, G., Cafagna, F., Kvashnin, A. N., Koldashov, S. V., Krutkov, S. Yu., Leonov, A. A., Malakhov, V. V., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Orsi, S., Osteria, G., Papini, P., De Pascale, M. P., Picozza, T. P., Pearce, M., De Rosa, G., Ricci, M., Ricciarini, S. B., Simon, M., De Simone, N., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Taddei, E., Di Felice, V., Fedele, D., Hofverberg, P., and Yurkin, Yu. T.

Published
2009
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31. An anomalous positron abundance in cosmic rays with energies 1.5-100 GeV

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, P., Casolino, M., Castellini, G., De Pascale, M. P., De Rosa, G., De Simone, N., Di Felice, V., Galper, A. M., Grishantseva, L., Hofverberg, P., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Orsi, S., Osteria, G., Papini, P., Pearce, M., Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Published
2009
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32. Latitudinal and radial gradients of galactic cosmic ray protons in the inner heliosphere – PAMELA and Ulysses observations

Author

De Simone, N., Di Felice, V., Gieseler, J., Boezio, M., Casolino, M., Picozza, P., Heber, B., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., Galper, A. M., Gillard, W., Grishantseva, L., Hofverberg, P., Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, J., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
010504 meteorology & atmospheric sciences, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Solar cycle 23, Cosmic ray, Electron, Astrophysics, 7. Clean energy, 01 natural sciences, law.invention, Telescope, Positron, law, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Nuclear Experiment, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Physics, Astronomy, Astronomy and Astrophysics, Antimatter, Physics::Space Physics, Astrophysics::Earth and Planetary Astrophysics, Nucleon, Heliosphere
Abstract

Ulysses, launched on 6 October 1990, was placed in an elliptical, high inclined (80.2) orbit around the Sun, and was switched off in June 2009. It has been the only spacecraft exploring high-latitude regions of the inner heliosphere. The Kiel Electron Telescope (KET) aboard Ulysses measures electrons from 3 MeV to a few GeV and protons and helium in the energy range from 6 MeV/nucleon to above 2 GeV/nucleon. The PAMELA (Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics) space borne experiment was launched on 15 June 2006 and is continuously collecting data since then. The apparatus measures electrons, positrons, protons, anti-protons and heavier nuclei from about 100 MeV to several hundreds of GeV. Thus the combination of Ulysses and PAMELA measurements is ideally suited to determine the spatial gradients during the extended minimum of solar cycle 23. For protons in the rigidity interval 1.6−1.8 GV we find a radial gradient of 2.7%/AU and a latitudinal gradient of −0.024%/degree. Although the latitudinal gradient is as expected negative, its value is much smaller than predicted by current particle propagation models. This result is of relevance for the study of propagation parameters in the inner heliosphere.

Published
2011
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33. PAMELA: Measurements of matter and antimatter in space

Author

De Simone N., Jerse G., Mocchiutti E., Adriani O., Barbarino G.C., Bazilevskaya G.A., Bellotti R., Boezio M., Bogomolov E.A., Bonechi L., Bongi M., Bonvicini V., Borisov S., Bottai S., Bruno A., Cafagna F., Campana D., Carbone R., Carlson P., Casolino M., Castellini G., Consiglio L., DePascale M.P., De Santis C., Di Felice V., Galper A.M., Gillard W., Grishantseva L., Karelin A.V., Koldashov S.V., Krutkov S.Y., Kvashnin A.N., Leonov A., Maksumov O., Malakhov V., Malvezzi V., Marcelli L., Mayorov A.G., Menn W., Monaco A., Mikhailov V.V., Mori N., Nikonov N.N., Osteria G., Palma F., Papini P., Pearce M., Picozza P., Pizzolotto C., Ricci M., Ricciarini S.B., Rossetto L., Runtso M., Sarkar R., Simon M., Sparvoli R., Spillantini P., Stozhkov Y.I., Vacchi A., Vannuccini E., Vasilyev G., Voronov S.A., Wu J., Yurkin Y.T., Zampa G., Zampa N., and Zverev V.G.

Subjects
Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astronomy and Astrophysics
Abstract

On the 15th of June 2006, the PAMELA satellite-borne experiment was launched from the Baikonur cosmodrome and it has been collecting data since July 2006. The apparatus comprises a time-of-flight system, a silicon-microstrip magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail counter scintillator and a neutron detector. The combination of these devices allows precision studies of the charged cosmic radiation to be conducted over a wide energy range (100 MeV-100's GeV) with high statistics. The primary scientific goal is the measurement of the antiproton and positron energy spectra in order to search for exotic sources, such as dark matter particle annihilations. PAMELA is also searching for primordial antinuclei (antihelium), and testing cosmic-ray propagation models through precise measurements of the antiparticle energy spectrum and precision studies of light nuclei and their isotopes. Moreover, PAMELA investigates phenomena connected with solar and earth physics. The main results and updated data will be presented. © Società Italiana di Fisica.

Published
2011
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34. Trapped protons in SAA measured by the PAMELA experiment

Author

Bruno, A., Cafagna, F., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Jerse, G., Karelin, A. V., Kheymits, M. D., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Wu, J., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Nuclear and High Energy Physics, Magnetosphere, Cosmic rays, Radiation belt, Saa, Trapped protons
Published
2011

35. PAMELA and electrons RID C-1210-2011

Author

Mocchiutti, E, Adriani, O, Barbarino, G, Bazilevskaya, G, Bellotti, R, Boezio, M, Bogomolov, E, Bonechi, L, Bongi, M, Bonvicini, V, Borisov, S, Bottai, S, Bruno, A, Cafagna, F, Campana, D, Carbone, R, Carlson, P, Casolino, M, Castellini, G, Consiglio, L, DE PASCALE, Mp, DE SANTIS, C, Di Felice, V, Galper, A, Grishantseva, L, Gillard, W, Hofverberg, P, Jerse, G, Koldashov, S, Krutkov, S, Kvashnin, A, Leonov, A, Maksumov, O, Malakhov, V, Malvezzi, V, Marcelli, L, Menn, W, Mikhailov, V, Mori, N, Nikonov, N, Osteria, G, Papini, P, Pearce, M, Picozza, P, Ricci, M, Ricciarini, S, Rossetto, L, Simon, M, Sparvoli, R, Spillantini, P, Stozhkov, Y, Vacchi, A, Vannuccini, E, Vasilyev, G, Voronov, S, Wu, J, Yurkin, Y, Zampa, G, Zampa, N, and Zverev, V

Subjects
Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2011

36. First detection of geomagnetically trapped antiprotons by the PAMELA experiment

Author

Bruno, A., Cafagna, F., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Jerse, G., Karelin, A. V., Kheymits, M. D., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Wu, J., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Nuclear and High Energy Physics, Cosmic rays, Magnetosphere, Radiation belt, SAA, Trapped antiprotons, Astrophysics::High Energy Astrophysical Phenomena, Physics::Space Physics, Physics::Accelerator Physics, Physics::Atomic Physics, Nuclear Experiment
Abstract

We present the measurement of geomagnetically trapped antiprotons in the South Atlantic Anomaly performed by the PAMELA satellite-bourne experiment. The existence of an antiproton radiation belt, predicted by several models as the product of cosmic ray interactions with the residual terrestrial atmosphere, is evidenced for the first time. PAMELA measured the antiproton spectrum in the kinetic energy range between 60 and 750 MeV, reporting a trapped antiproton flux which exceeds by about 3 orders of magnitude the interplanetary cosmic ray antiproton flux. An estimation of the mean under-cutoff antiproton flux outside radiation belts has been also provided.

Published
2011

37. Sub-cutoff electrons and positrons spectra measured with PAMELA

Author

Mikhailov, Vladimir, Grishantseva, L. A., Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F. S., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Jerse, G., Hofverberg, P., Karelin, A. V., Koldashov, S. V., Koldobsky, S., Krutkov, S. Yu., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N. N., Osteria, G., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Yu. I., Vacchi, A., Vannuccini, E., Vasiliev, G. I., Voronov, S. A., Wu, J., Yurkin, Yu. T., Zampa, G., Zampa, N., and Zverev, V. G.

Subjects
Nuclear and High Energy Physics, Positrons, Magnetosphere, Electrons, Magnetic spectrometer
Published
2011

38. PAMELA results on the cosmic-ray antiproton flux from 60 MeV to 180 GeV in kinetic energy

Author

Adriani, O, Barbarino, G, Bazilevskaya, G, Bellotti, R, Boezio, M, Bogomolov, E, Bonechi, L, Bongi, M, Bonvicini, V, Borisov, S, Bottai, S, Bruno, A, Cafagna, F, Campana, D, Carbone, R, Carlson, P, Casolino, M, Castellini, G, Consiglio, L, DE PASCALE, Mp, DE SANTIS, C, De Simone, N, De Felice, V, Galper, A, Gillard, W, Grishantseva, L, Hofverberg, P, Jerse, G, Karelin, A, Koldashov, S, Krutkov, S, Kvashnin, A, Leonov, A, Malvezzi, V, Marcelli, L, Mayorov, A, Menn, W, Mikhailov, V, Minori, M, Mocchiutti, E, Monaco, A, Mori, N, Nikonov, N, Osteria, G, Papini, P, Pearce, M, Picozza, P, Pizzolotto, C, Ricci, M, Ricciarini, S, Rossetto, L, Simon, M, Sparvoli, R, Spillantini, P, Stozhkov, Y, Taddei, E, Vacchi, A, Vannuccini, E, Vasilyev, G, Voronov, S, Wu, J, Yurkin, Y, Zampa, G, Zampa, N, Zverev, V, Barbarino, Giancarlo, D., Campana, R., Carbone, L., Consiglio, and G., Osteria

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Antiparticle, Particle physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, FOS: Physical sciences, General Physics and Astronomy, Flux, Cosmic ray, Kinetic energy, 01 natural sciences, Settore FIS/04 - Fisica Nucleare e Subnucleare, Baryon, Antiproton, Antimatter, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Astrophysics - High Energy Astrophysical Phenomena, Nuclear Experiment, 010306 general physics
Abstract

The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray antiproton flux and the antiproton-to-proton flux ratio which extends previously published measurements down to 60 MeV and up to 180 GeV in kinetic energy. During 850 days of data acquisition approximately 1500 antiprotons were observed. The measurements are consistent with purely secondary production of antiprotons in the galaxy. More precise secondary production models are required for a complete interpretation of the results., 11 pages, 3 figures, 1 table. Accepted for publication in Physical Review Letters

Published
2010

39. Measurements of quasi-trapped electron and positron fluxes with PAMELA

Author

Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F. S., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L. A., Jerse, G., Hofverberg, P., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N. N., Osteria, G., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Ritabrata, S., Runtso, M. F., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Wu, J., Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., O., Adriani, Barbarino, Giancarlo, G. A., Bazilevskaya, R., Bellotti, M., Boezio, E. A., Bogomolov, L., Bonechi, M., Bongi, V., Bonvicini, S. V., Borisov, S., Bottai, A., Bruno, F. S., Cafagna, D., Campana, R., Carbone, P., Carlson, M., Casolino, G., Castellini, L., Consiglio, M. P., De Pascale, C., De Santi, N., De Simone, V., Di Felice, A. M., Galper, W., Gillard, L. A., Grishantseva, G., Jerse, P., Hofverberg, A. V., Karelin, S. V., Koldashov, S. Y., Krutkov, A. N., Kvashnin, A. A., Leonov, V. V., Malakhov, V., Malvezzi, L., Marcelli, A. G., Mayorov, W., Menn, V. V., Mikhailov, E., Mocchiutti, A., Monaco, N., Mori, N. N., Nikonov, G., Osteria, P., Papini, M., Pearce, P., Picozza, C., Pizzolotto, M., Ricci, S. B., Ricciarini, L., Rossetto, S., Ritabrata, M. F., Runtso, M., Simon, R., Sparvoli, P., Spillantini, Y. I., Stozhkov, A., Vacchi, E., Vannuccini, G. I., Vasilyev, S. A., Voronov, J., Wu, Y. T., Yurkin, G., Zampa, N., Zampa, and V. G., Zverev

Subjects
Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2009

40. Time Dependence Of The Proton Flux Measured By Pamela During The 2006 July-2009 December Solar Minimum

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Grishantseva, L., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Wu, Juan, Zampa, G., Zampa, N., Zverev, V. G., Potgieter, M. S., Vos, E. E., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Grishantseva, L., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Wu, Juan, Zampa, G., Zampa, N., Zverev, V. G., Potgieter, M. S., and Vos, E. E.

Abstract

The energy spectra of galactic cosmic rays carry fundamental information regarding their origin and propagation. These spectra, when measured near Earth, are significantly affected by the solar magnetic field. A comprehensive description of the cosmic radiation must therefore include the transport and modulation of cosmic rays inside the heliosphere. During the end of the last decade, the Sun underwent a peculiarly long quiet phase well suited to study modulation processes. In this paper we present proton spectra measured from 2006 July to 2009 December by PAMELA. The large collected statistics of protons allowed the time variation to be followed on a nearly monthly basis down to 400 MV. Data are compared with a state-of-the-art three-dimensional model of solar modulation., QC 20130408

Published
2013
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41. Precise cosmic rays measurements with PAMELA

Author

Bruno, A., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L., Jerse, G., Karelin, A. V., Kheymits, M. D., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Wu, J., Zampa, G., Zampa, N., Zverev, V. G., Bruno, A., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L., Jerse, G., Karelin, A. V., Kheymits, M. D., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Wu, J., Zampa, G., Zampa, N., and Zverev, V. G.

Abstract

The PAMELA experiment was launched on board the Resurs-DK1 satellite on June 15th 2006. The apparatus was designed to conduct precision studies of charged cosmic radiation over a wide energy range, from tens of MeV up to several hundred GeV, with unprecedented statistics. In five years of continuous data taking in space, PAMELA accurately measured the energy spectra of cosmic ray antiprotons and positrons, as well as protons, electrons and light nuclei, sometimes providing data in unexplored energetic regions. These important results have shed new light in several astrophysical fields like: an indirect search for Dark Matter, a search for cosmological antimatter (anti-Helium), and the validation of acceleration, transport and secondary production models of cosmic rays in the Galaxy. Some of the most important items of Solar and Magnetospheric physics were also investigated. Here we present the most recent results obtained by the PAMELA experiment., QC 20140911

Published
2013
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42. Measurements of cosmic-ray proton and helium spectra with the PAMELA calorimeter

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L. A., Jerse, G., Karelin, A. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Marcelli, L., Mayorov, A. G., Koldashov, S. V., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricciarini, S., Rossetto, Laura, Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Wu, Juan, Zampa, G., Zampa, N., Zverev, V. G., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S. V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L. A., Jerse, G., Karelin, A. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A. A., Malakhov, V. V., Marcelli, L., Mayorov, A. G., Koldashov, S. V., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricciarini, S., Rossetto, Laura, Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Wu, Juan, Zampa, G., Zampa, N., and Zverev, V. G.

Abstract

We present a new measurement of the cosmic ray proton and helium spectra by the PAMELA experiment performed using the "thin" (in terms of nuclei interactions) sampling electromagnetic calorimeter. The described method, optimized by using Monte Carlo simulation, beam test and experimental data, allows the spectra to be measured up to 10 TeV, thus extending the PAMELA observational range based on the magnetic spectrometer measurement., QC 20130215

Published
2013
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43. Anisotropy studies in the cosmic ray proton flux with the PAMELA experiment

Author

Giaccari, U., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Bianco, A., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Grishantseva, L., Jerse, G., Karelin, A. V., Kheymits, M. D., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Malvezzi, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, Riccardo, Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., Giaccari, U., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Bianco, A., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Grishantseva, L., Jerse, G., Karelin, A. V., Kheymits, M. D., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Malvezzi, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, Riccardo, Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Abstract

Using data taken by the Pamela experiment during 5 years of operation we studied the anisotropy in the arrival direction distribution of cosmic ray protons with rigidity above 40 GV. In this survey we used two different and independent techniques to investigate the large and medium anisotropy patterns in the proton spectrum. With both methods the observed distribution of arrival directions is consistent with the isotropic expectation and no significant evidence of strong anisotropies has been observed., QC 20131118

Published
2013
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44. PAMELA : Measurements of matter and antimatter in space

Author

De Simone, N., Jerse, G., Mocchiutti, E., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., DePascale, M. P., De Santis, C., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Maksumov, O., Malakhov, V., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Monaco, A., Mikhailov, V. V., Mori, N., Nikonov, N. N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Runtso, M., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., De Simone, N., Jerse, G., Mocchiutti, E., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., DePascale, M. P., De Santis, C., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Maksumov, O., Malakhov, V., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Monaco, A., Mikhailov, V. V., Mori, N., Nikonov, N. N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Runtso, M., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Abstract

On the 15th of June 2006, the PAMELA satellite-borne experiment was launched from the Baikonur cosmodrome and it has been collecting data since July 2006. The apparatus comprises a time-of-flight system, a silicon-microstrip magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail counter scintillator and a neutron detector. The combination of these devices allows precision studies of the charged cosmic radiation to be conducted over a wide energy range (100 MeV-100's GeV) with high statistics. The primary scientific goal is the measurement of the antiproton and positron energy spectra in order to search for exotic sources, such as dark matter particle annihilations. PAMELA is also searching for primordial antinuclei (antihelium), and testing cosmic-ray propagation models through precise measurements of the antiparticle energy spectrum and precision studies of light nuclei and their isotopes. Moreover, PAMELA investigates phenomena connected with solar and earth physics. The main results and updated data will be presented., QC 20140815

Published
2011
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45. Cosmic ray studies with PAMELA experiment

Author

Picozza, P., Sparvoli, R., Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L., Jerse, G., Karelin, A., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Papini, P., Pearce, Mark, Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Simon, M., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., Picozza, P., Sparvoli, R., Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L., Jerse, G., Karelin, A., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Papini, P., Pearce, Mark, Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Simon, M., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Abstract

The instrument PAMELA, in orbit since June 15th, 2006 on board of the Russian satellite Resurs DK1, is daily delivering to ground 16 Gigabytes of data. The apparatus is designed to study charged particles in the cosmic radiation, with a particular focus on antiparticles for searching antimatter and signals of dark matter annihilation. A combination of a magnetic spectrometer and different detectors allows antiparticles to be reliably identified from a large background of other charged particles. New results on the antiproton-to-proton and positron-toall electron ratios over a wideenergy range (1-100 GeV) have been obtained from the PAMELA mission. These data are mainly interpreted in terms of dark matter annihilation or pulsar contribution., QC 20140910

Published
2011

46. OBSERVATIONS OF THE 2006 DECEMBER 13 AND 14 SOLAR PARTICLE EVENTS IN THE 80 MeV n(-1)-3 GeV n(-1) RANGE FROM SPACE WITH THE PAMELA DETECTOR

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Grishantseva, L., Gillard, William, Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikiiailov, V. V., Mocciiiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Sarkar, R., Rossetto, Laura, Simon, M., Sparvoli, R., Spillantini, P., Stoziikov, Y. I., Vacciii, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Grishantseva, L., Gillard, William, Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikiiailov, V. V., Mocciiiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Sarkar, R., Rossetto, Laura, Simon, M., Sparvoli, R., Spillantini, P., Stoziikov, Y. I., Vacciii, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Abstract

We present the space spectrometer PAMELA observations of proton and helium fluxes during the 2006 December 13 and 14 solar particle events. This is the first direct measurement of the solar energetic particles in space with a single instrument in the energy range from similar to 80 MeV n(-1) up to similar to 3 GeV n(-1). For the December 13 event, measured energy spectra of solar protons and helium are compared with results obtained by neutron monitors and other detectors. Our measurements show a spectral behavior different from those derived from the neutron monitor network. No satisfactory analytical fitting was found for the energy spectra. During the first hours of the December 13 event, solar energetic particles spectra were close to the exponential form, demonstrating rather significant temporal evolution. Solar He with energy up to 1 GeV n(-1) was recorded on December 13. For the December 14 event, energy of solar protons reached 600 MeV, whereas the maximum energy of He was below 100 MeV n(-1). The spectra were slightly bent in the lower energy range and preserved their form during the second event. Differences in the particle flux appearance and temporal evolution of these two events may argue for special conditions leading to the acceleration of solar particles up to relativistic energies., QC 20220608

Published
2011
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47. Results from PAMELA

Author

Mocchiutti, E., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L., Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Maksumov, O., Malakhov, V., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Monaco, A., Mikhailov, V. V., Mori, N., Nikonov, N. N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Runtso, M., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., Mocchiutti, E., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L., Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Maksumov, O., Malakhov, V., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Monaco, A., Mikhailov, V. V., Mori, N., Nikonov, N. N., Osteria, G., Palma, F., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Runtso, M., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Abstract

The PAMELA satellite experiment was launched into low earth orbit on June 15(th) 2006. The combination of a permanent magnet silicon strip spectrometer and a silicon-tungsten imaging calorimeter allows precision studies of the charged cosmic radiation to be conducted over a wide energy range (100 MeV - several hundred GeV). A primary scientific goal is to search for dark matter particle annihilation by measuring the energy spectra of cosmic ray antiparticles. Latest results from the PAMELA experiment are presented with a particular focus on cosmic ray antiprotons and positrons., QC 20111115

Published
2011
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48. Cosmic-Ray Electron Flux Measured by the PAMELA Experiment between 1 and 625 GeV

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stochaj, S. J., Stockton, J. C., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, J., Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, W., Grishantseva, L., Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Palma, F., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Simon, M., Sparvoli, R., Spillantini, P., Stochaj, S. J., Stockton, J. C., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, J., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Abstract

Precision measurements of the electron component in the cosmic radiation provide important information about the origin and propagation of cosmic rays in the Galaxy. Here we present new results regarding negatively charged electrons between 1 and 625 GeV performed by the satellite-borne experiment PAMELA. This is the first time that cosmic-ray e(-) have been identified above 50 GeV. The electron spectrum can be described with a single power-law energy dependence with spectral index -3.18 +/- 0.05 above the energy region influenced by the solar wind (> 30 GeV). No significant spectral features are observed and the data can be interpreted in terms of conventional diffusive propagation models. However, the data are also consistent with models including new cosmic-ray sources that could explain the rise in the positron fraction., AuthorCount:66

Published
2011
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49. PAMELA Results on the Cosmic-Ray Antiproton Flux from 60 MeV to 180 GeV in Kinetic Energy

Author

Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L., Hofverberg, Petter, Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Borisov, S., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, Per, Casolino, M., Castellini, G., Consiglio, L., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Gillard, William, Grishantseva, L., Hofverberg, Petter, Jerse, G., Karelin, A. V., Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Mayorov, A. G., Menn, W., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Nikonov, N., Osteria, G., Papini, P., Pearce, Mark, Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, Laura, Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Wu, Juan, Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Abstract

The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray antiproton flux and the antiproton-to-proton flux ratio which extends previously published measurements down to 60 MeV and up to 180 GeV in kinetic energy. During 850 days of data acquisition approximately 1500 antiprotons were observed. The measurements are consistent with purely secondary production of antiprotons in the Galaxy. More precise secondary production models are required for a complete interpretation of the results., QC 20101203

Published
2010
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50. Cosmic rays studies with the PAMELA space experiment

Author

Sparvoli, R., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, Per, Casolino, M., Castellini, G., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Grishantseva, L., Hofverberg, Petter, Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Osteria, G., Papini, P., Pearce, Mark, Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., Zverev, V. G., Sparvoli, R., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bonechi, L., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carlson, Per, Casolino, M., Castellini, G., De Pascale, M. P., De Santis, C., De Simone, N., Di Felice, V., Galper, A. M., Grishantseva, L., Hofverberg, Petter, Koldashov, S. V., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malvezzi, V., Marcelli, L., Menn, W., Mikhailov, V. V., Mocchiutti, E., Osteria, G., Papini, P., Pearce, Mark, Picozza, P., Ricci, M., Ricciarini, S. B., Simon, M., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N., and Zverev, V. G.

Abstract

The instrument PAMELA, in orbit since June 15th, 2006 on board the Russian satellite Resurs DK1, is delivering to ground 16 Gigabytes of data per day. The apparatus is designed to study charged particles in the cosmic radiation, with a particular focus on antiparticles as a possible signature of dark matter annihilation in the galactic halo; the combination of a magnetic spectrometer and different detectors-indeed-allows antiparticles to be reliably identified from a large background of other charged particles. New results on the antiproton-to-proton and positron-to-all-electron ratios over a wide energy range (1-100GeV) have been recently released by the PAMELA Collaboration, and will be summarized in this paper. While the antiproton-to-proton ratio does not show particular differences from an antiparticle standard secondary production, in the positron-to-all-electron ratio an enhancement is clearly seen at energies above 10GeV. Possible interpretations of this effect will be briefly discussed., Not duplicate with DiVA 751861.QC 20211117

Published
2010

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